It would be VERY nice to be able to select two or more devices to cast a video to at the same time. WHY?
At our church we have a "fellowship hall"... very long and rather narrow with TV's at either end. We can now simulcast by selecting the first device and start then selecting the other device to start, but it would be cleaner and easier if we could select both THEN start the simulcast.
In this way, I can help the presenters.

Another use of this is at our home when we have people over and want to present the same movie on the patio that is playing in the Living Room.

Also, If there is a work around to this issue, please let me (and possibly others) know how to do it.
Thanks, John